{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:51.412505", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2012-Jul-02_to_2012-Jul-06_349.0_7.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2012070000222}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "July 02 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 06 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 55104.63898576642}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Liberia", "Sierra Leone"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 7.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 349.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "349.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 347.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 350.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-07-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 9.03], [-12.0, 9.25], [-11.47, 9.03], [-11.32, 8.68], [-10.97, 8.53], [-10.75, 8.0], [-10.85, 7.75], [-10.82, 7.68], [-10.47, 7.53], [-10.32, 7.18], [-9.97, 7.03], [-9.75, 6.5], [-9.97, 5.97], [-10.5, 5.75], [-11.03, 5.97], [-11.18, 6.32], [-11.53, 6.47], [-11.68, 6.82], [-12.03, 6.97], [-12.18, 7.32], [-12.53, 7.47], [-12.75, 8.0], [-12.65, 8.25], [-12.75, 8.5], [-12.53, 9.03]]]]}, "2012-07-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 8.75], [-12.75, 9.0], [-12.53, 9.53], [-12.0, 9.75], [-11.75, 9.65], [-11.5, 9.75], [-11.25, 9.65], [-11.0, 9.75], [-10.47, 9.53], [-10.25, 9.0], [-10.35, 8.75], [-10.32, 8.68], [-9.97, 8.53], [-9.75, 8.0], [-9.85, 7.75], [-9.82, 7.68], [-9.47, 7.53], [-9.25, 7.0], [-9.47, 6.47], [-9.82, 6.32], [-9.97, 5.97], [-10.5, 5.75], [-11.03, 5.97], [-11.18, 6.32], [-11.53, 6.47], [-11.68, 6.82], [-12.03, 6.97], [-12.18, 7.32], [-12.53, 7.47], [-12.75, 8.0], [-12.65, 8.25], [-12.75, 8.5], [-12.65, 8.75]]]]}, "2012-07-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 8.75], [-12.75, 9.0], [-12.53, 9.53], [-12.0, 9.75], [-11.75, 9.65], [-11.5, 9.75], [-11.25, 9.65], [-11.0, 9.75], [-10.47, 9.53], [-10.25, 9.0], [-10.35, 8.75], [-10.32, 8.68], [-10.25, 8.65], [-10.0, 8.75], [-9.47, 8.53], [-9.25, 8.0], [-9.46, 7.5], [-9.25, 7.0], [-9.47, 6.47], [-9.82, 6.32], [-9.97, 5.97], [-10.5, 5.75], [-11.03, 5.97], [-11.18, 6.32], [-11.53, 6.47], [-11.68, 6.82], [-12.03, 6.97], [-12.18, 7.32], [-12.53, 7.47], [-12.75, 8.0], [-12.65, 8.25], [-12.75, 8.5], [-12.65, 8.75]]]]}, "2012-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 8.75], [-12.75, 9.0], [-12.53, 9.53], [-12.0, 9.75], [-11.75, 9.65], [-11.5, 9.75], [-11.25, 9.65], [-11.0, 9.75], [-10.47, 9.53], [-10.25, 9.0], [-10.35, 8.75], [-10.32, 8.68], [-10.25, 8.65], [-10.0, 8.75], [-9.47, 8.53], [-9.25, 8.0], [-9.46, 7.5], [-9.25, 7.0], [-9.47, 6.47], [-9.82, 6.32], [-9.97, 5.97], [-10.5, 5.75], [-11.03, 5.97], [-11.18, 6.32], [-11.53, 6.47], [-11.68, 6.82], [-12.03, 6.97], [-12.18, 7.32], [-12.53, 7.47], [-12.75, 8.0], [-12.65, 8.25], [-12.75, 8.5], [-12.65, 8.75]]]]}, "2012-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.65, 8.75], [-12.75, 9.0], [-12.53, 9.53], [-12.0, 9.75], [-11.75, 9.65], [-11.5, 9.75], [-11.25, 9.65], [-11.0, 9.75], [-10.47, 9.53], [-10.25, 9.0], [-10.35, 8.75], [-10.32, 8.68], [-10.25, 8.65], [-10.0, 8.75], [-9.47, 8.53], [-9.25, 8.0], [-9.46, 7.5], [-9.25, 7.0], [-9.47, 6.47], [-9.82, 6.32], [-9.97, 5.97], [-10.5, 5.75], [-11.03, 5.97], [-11.18, 6.32], [-11.53, 6.47], [-11.68, 6.82], [-12.03, 6.97], [-12.18, 7.32], [-12.53, 7.47], [-12.75, 8.0], [-12.65, 8.25], [-12.75, 8.5], [-12.65, 8.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.451804687997992}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.467220474647365}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.2279089332892, 22.4479924676005, 22.90673124870898, 22.126697882432552, 22.513660259383244]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.979566159854585, 21.62552669301374, 22.057340763770014, 20.846728297945617, 21.633277201975943]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1516725521033304, -1.5812340918977437, -1.0930912142422673, -1.8516500517559582, -1.454423271388745]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3586836155707829, -1.977479486174957, -1.2483634622977888, -2.451804687997992, -1.7196447269894861]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.651353995344392, -2.147023350254654, -1.4844918002077447, -2.5136794576468224, -1.9818946847168502]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.919003121401046, -2.662737586194268, -1.6754497343850594, -3.116365598883938, -2.3719468364643035]}}